well, I think if it were ME, I would rotate them to the proper position with the large end up. especially since the air cell is in the large end. I was wondering if it could have moved, but it didn't. I think I would want them right side up.
I don't know if this could affect the embryo's positioning, rotating it part way through...
Guess I should have read up on it first. The friend who owns the incubator told me all the steps, but forgot to mention that the eggs should be fat side up. Appreciate your advice and I probably will end up turning them. However, I'm going to hold off for at least a couple hours, hoping someone has had or heard of this happening before, and knows the likely outcome of each scenario.